// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-generator-function-definitions-runtime-semantics-evaluation
es6id: 14.4.14
description: >
  Iteration protocol is not initiated for non-delegating YieldExpression
info: |
  YieldExpression:yieldAssignmentExpression

  1. Let exprRef be the result of evaluating AssignmentExpression.
  2. Let value be ? GetValue(exprRef).
  3. Return ? GeneratorYield(CreateIterResultObject(value, false)).
features: [generators, Symbol.iterator]
---*/

function Test() {
    var callCount = 0;
    var iterSpy = Object.defineProperty({}, Symbol.iterator, {
      get: function() {
        callCount += 1;
      }
    });
    function* g() {
      yield iterSpy;
    }
    var iter = g();
    var result;

    result = iter.next();

    assert.sameValue(result.value, iterSpy);
    assert.sameValue(result.done, false);
    assert.sameValue(callCount, 0);

    result = iter.next();

    assert.sameValue(result.value, undefined);
    assert.sameValue(result.done, true);
    assert.sameValue(callCount, 0);
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
